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Zener Diode Tester
November 2014
The tester described in this article is a simple two-transistor circuit operating from a 9V battery which tests zener diodes with breakdown voltages up to 52 volts. Nothing more than a multimeter is necessary to build, test, and use the circuit.
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Selected questions from past Q&A columns.
Need to brush up on your electronics principles? These multi-part series may be just what you need!